This circuit is from a 1976 Motorola CMOS manual. It can be implemented with modern Darlingtons like those in the Texas TIP series. The load current depends only on the Darlington transistor.
Timings of up to 10 hours, depending on the capacitor used, can be obtained with this circuit that...
This unit is ideal for powering car radios, tape players or car CD and DVD players from the power...
This three-transistor circuit can control 3 V relays or servos from 17 MHz modulated transmitters. The...